4 Answers
4

Adamantium Beta: The only known occurrence of Adamantium Beta was
during the Weapon X Project. By the second part of the procedure when
they laced his bones with Adamantium there was a reaction with his
healing factor that bonded metal and bone. As a result the Adamantium
"heals" just as his bones do.

Marvel's own wiki refers to the adamantium beta and the fact that it is a new, separate material which does not inhibit normal bone functions, but does not specifically mention the adamantium healing itself. comicvine's page on adamantium, however, does. I'd like to find some more direct confirmation from Marvel somewhere.
– phantom42Apr 8 '12 at 16:22

1

So could he farm adamantium by chopping off his arms?
– Kai QingMar 13 '17 at 22:04

His Body Can heal Adamantium because his body bonded with the Metal basically treating it as one, his "armour" is considered Adamantium Beta. It is the same Strength as Primary Adamantium but it is a biological substance which is Affected by his healing Factor, Every time Wolverine gets limbs or parts of him Cut off by either the Samurai Blade or anything that can in fact Cut Adamantium. He will regrow it back as bone. But given sustained time to recover the adamantium will Regrow with it. It just takes substantially longer to heal due to its "indestructible" properties. Based on the MCU they havent Informed the Fan base that it is Possible. But he also has had help from Magneto to help speed up the healing due to his Mutation of being able to control and alter any Metal substance

When the adamantium was ripped out it did not grow back. It was stolen by apocalypse from Cyber and reimplanted. It doesn't regenerate nor did weapon x make his DNA somehow produce inorganic material that is also toxic to his system. Dumb.